Glossary: R

R
Radiograph: An image produced on a radiosensitive surface, such as a photographic film, by radiation other than visible light, especially by x-rays passed through an object.
Resectable: Suitable for Surgical removal of all or part of an organ, tissue, or structure.
Retinoids: Compounds chemically related to, or derived from, vitamin A, which display some of the biological activities of the vitamin, but have lower toxicity; they are used for treatment of severe skin disorders and some cancers.